lec 10 knee joint

Question 1

what type of joint is knee joint

Answer 1

synovial hinge joint

Question 2

complexity of knee joint

Answer 2

composite

menisci and 3 articulating surfaces

Question 3

how many condyles in knee joint

Answer 3

2 pairs

Question 4

motion of knee joint

Answer 4

uniaxial joint

around transverser axis in sagittal plane

Question 5

movement of knee joint

Answer 5

flexion extension

Question 6

When can small amounts of passive abduction and adduction occur in the knee joint?

Answer 6

during flexion

Question 7

what is conjunct

Answer 7

joined or united

Question 8

what is adjunct

Answer 8

joined or added but not an essential part

Question 9

When does conjunct medial femoral rotation occur?

Answer 9

During the last 30 degrees of extension (from flexion) and corresponding lateral femoral rotation

Question 10

In which position is the knee strongest osteologically?

Answer 10

extension

Question 11

Where are the menisci avascular and vascular?

Answer 11

Avascular centrally, but vascular peripherally

Question 12

How do the menisci attach to the tibia?

Answer 12

Via fibers of the capsule called the coronary ligament

Question 13

what do menisci do

Answer 13

improve bony articulation between femoral condyles and tibial condyles

Question 14

how are menisci attached to tibia

Answer 14

loosely via fibers of capsule called coronary ligament

Question 15

what are the extrascapular ligaments

Answer 15

tibial collateral

fibular collateral

Question 16

Does the lateral collateral ligament have any lateral attachments to the meniscus?

Answer 16

no

Question 17

Does the medial collateral ligament have any attachments to the meniscus

Answer 17

yes

Question 18

when are the TCL & FCL tensed

Answer 18

in extension

contribute to knee joint stability

Question 19

What are the intracapsular cruciate ligaments?

Answer 19

ACL
PCL
Transverse genicular

Question 20

What is the mnemonic for the directions the ACL and PCL run?

Answer 20

APEX

PAIN

Question 21

Which of the cruciate ligaments has the better blood supply?

Answer 21

PCL

Question 22

Which of the cruciate ligaments is tensed in extension?

Answer 22

ACL

Question 23

Which of the cruciate ligaments is tensed in flexion?

Answer 23

PCL

Question 24

What contribute to the unhappy triad?

Answer 24

ACL, MCL, and MM

Question 25

Are the ACL and PCL intra or extrasynovial

Answer 25

Extrasynovial (but intracapsular)

Question 26

ACL limits what

Answer 26

medial rotation of femur when foot is fixed and knee is flexed

Question 27

What are the major bursa at the knee?

Answer 27

Subcutaneous prepatellar Subcutaneous infrapatellar Subtendinous infrapatellar Suprapatellar

Question 28

What is the innervation at the knee?

Answer 28

Articular branches of femoral nerve, posterior division of obturator, tibial and common fibular (peroneal) nerves

Question 29

What arteries anastomose around the knee?

Answer 29

Femoral (4th perforating branch) Popliteal Posterior tibial

Question 30

What is the name of the portion of the MCL that attached to meniscus?

Answer 30

posterior oblique ligament